Tags

A tag is a keyword or label that categorizes your question with other, similar questions. Using the right tags makes it easier for others to find and answer your question.

All versions of Microsoft SQL Server (not MySQL). Please also add a version-specific tag, like sql-server-2016, since it is often relevant to the question.
All versions of MySQL (not Microsoft SQL Server). Please also add a version-specific tag like mysql-5.7 if that is relevant to the question.
18816 questions
All versions of PostgreSQL. Add an additional version-specific tag like postgresql-11 if that context is important.
All versions of Oracle database. Add a version-specific tag like oracle-11g-r2 if that context is important in the question. Do not use for Oracle products such as applications or middleware or other …
An evaluation of whether a system works well enough to be fit for purpose. Normally performance refers to the speed with which a system completes an operation or set of operations over time.
The development of the conceptual schema and/or the logical model and/or the physical settings of a database.
SQL Server 2012 (major build version 11.00.xxxx). Please also tag sql-server.
SQL Server 2008 (major build version 10.00.xxxx). Please also tag with sql-server.
3841 questions
SQL Server 2008 R2 (major build version 10.50.xxxx). Please also tag with sql-server.
the process of sharing any level of information so as to ensure consistency between redundant hardware/software resources to improve reliability, fault-tolerance, and accessibility
A database structure that can improve the speed of queries at the cost of disk space and slower inserts/updates. It stores a copy of one or more columns sorted but structures the data differently to …
a dialect of SQL used by Microsoft SQL Server and SAP's Sybase.
For questions about improving the performance and/or efficiency of database queries.
SQL Server 2014 (major build version 12.0.xxxx). Please also tag sql-server.
Making copies of data which may be restored after a data loss event or to recover data from some earlier point in time.
SQL Server 2016 (major build version 13.00.xxxx). Please also tag sql-server.
All versions of MongoDB - a scalable, high-performance, open source, document-oriented database.
InnoDB : MySQL's ACID-compliant Storage Engine
In the context of a database, optimisation refers to the process of the query optimiser selecting an efficient physical execution plan.
An SQL join clause combines records from two or more tables or views.
Open source RDBMS designed to be a "drop-in" replacement for MySQL. Add a version-specific tag like mariadb-10.2 if that context is important.
Callable code installed on a database manager, exposing an API through which it can be invoked. Normally written in the native query language, some DBMS platforms support other languages as well.
SQL Server 2005 (major build version 9.00.xxxx). Please also tag sql-server.
1326 questions
Privileges granted to an account or role through the security mechanism of an operating system, database manager or other system.
Oracle Database 11g Release 2. Please also tag oracle for search purposes.
Procedural code automatically executed in response to a database event.
MySQL version 5.5 - please also tag with mysql for search purposes.
1192 questions
a new feature of SQL Server 2012 that provide continuous data synchronization, automatic failover and secondary read access for one or many SQL Server databases.
Reloading a database from a backup, typically for disaster recovery, or to make a copy of a database onto another server.
SQL Server Management Studio, a graphical front-end tool shipped with SQL Server for managing and querying databases. It also supports managing other bundled systems such as SSAS.
MySQL version 5.6 - please also tag with mysql for search purposes.
SQL Server Integration Services, an ETL tool sold by Microsoft and bundled with SQL Server versions since SQL Server 2005.
964 questions
Allowing users to access only the data they are authorized to access. It also encompasses protection of data during movement on the network and storage on disks and backups.
Writing queries to request or change information stored in a database or other information management system. Questions should include table and index definitions, sample data, expected output, and a …
A core SQL statement, SELECT retrieves data from one or more tables or other sources of row set data such as views or table-valued functions.
its structure described in a formal language supported by the database management system (DBMS) and refers to the organization of data to create a blueprint of how a d…
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